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In the figure XY and X'Y' are two parall...

In the figure XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AB with point of cantact C intersecting XY at A and X'Y' at B then `angle AOB=

A

`75^@`

B

`95^@`

C

`70^@`

D

`90^@`

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BEYOND PUBLICATION-TANGENTS AND SECANTS TO CIRCLE-EXERCISE
  1. Area of a regular hexagon whose side is 'a' cm is……………

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  2. Parallelogram circumscribing a circle is a ………………..

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  3. In the figure XY and X'Y' are two parallel tangents to a circle with ...

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  4. Choose the correct answer and give justification for each . The ang...

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  5. If AP and AQ are the two tangents of a circle with centre 'O'. So that...

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  6. Area of circle interms of diameter is ………..

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  7. In the figure AP , = 12 cm , PB = 16 cm and pi=3 then perimeter of sh...

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  8. A bicycle wheel makes 75 revolutions per minute to maintain a speed of...

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  9. Angle described by hour hand in 12 hoours is ……..

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  10. Each angle in a square is ……

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  11. In the figure, the area of shaded region is……………..cm^2.

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  12. Perimeter of semicircle is …………….. Units .

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  13. In the figure the relation among a, b and c is…………

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  14. In the figure, a =……………….

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  15. Perimeter of sectors = ……………….

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  16. The radius of a circle is doubled then its area becomes ……………….. Time...

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  17. If two concentric circles, a chord of length 40 cm of larger circle be...

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  18. A chord of circle of radius 10 cm subtends a right angle at the centre...

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  19. Find the area of the shaded region in figure , where ABCD is a square ...

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  20. Calculate the area of the desigred region in figure , common between t...

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